Page Custom Field

Hi I wonder if anyone can help me;

Ive been looking around but cant fidn the answer;
Basically I want to display a Custom Field of a PAGE, not Post;

How do I go about this? Is it by page ID? as I know the page ID (which is 9)

Ive created a template and want the user to able to update the custom field, called Welcome Text , when they update that page;

I just dont know the code to call the custom field for that page.

Hope that makes sense, Any help greatly appreciated